Illustration 22
g01195325
4.
Remove the plug (4) from the cylinder block. Install
Tooling (C) into the hole (Y) in the cylinder block.
Use Tooling (C) in order to lock the crankshaft in
the correct position.
Note:
Do not use excessive force to install Tooling
(C). Do not use Tooling (C) to hold the crankshaft
during repairs.
i01944302
Fuel
Quality
-
Test
Use the following procedure to test for problems
regarding fuel quality:
1.
Determine if water and/or contaminants are
present in the fuel. Check the water separator (if
equipped). If a water separator is not present,
proceed to Step 2. Drain the water separator, if
necessary. A full fuel tank minimizes the potential
for overnight condensation.
Note:
A water separator can appear to be full of fuel
when the water separator is actually full of water.
2.
Determine if contaminants are present in the fuel.
Remove a sample of fuel from the bottom of the
fuel tank. Visually inspect the fuel sample for
contaminants. The color of the fuel is not
necessarily an indication of fuel quality. However,
fuel that is black, brown, and/or similar to sludge
can be an indication of the growth of bacteria or oil
contamination. In cold temperatures, cloudy fuel
indicates that the fuel may not be suitable for the
operating conditions. Refer to Operation and
Maintenance Manual, “Fuel Recommendations” for
more information.
3.
If fuel quality is still suspected as a possible cause
of problems regarding engine performance,
disconnect the fuel inlet line, and temporarily
operate the engine from a separate source of fuel
that is known to be good. This will determine if the
problem is caused by fuel quality. If fuel quality is
determined to be the problem, drain the fuel
system and replace the fuel filters. Engine
performance can be affected by the following
characteristics:
• Cetane number of the fuel
• Air in the fuel
• Other fuel characteristics
i05779897
Fuel System - Prime
If air enters the fuel system, the air must be purged
from the fuel system before the engine can be
started. Air can enter the fuel system when the
following events occur:
• The fuel tank is empty or the fuel tank has been
partially drained.
• The low-pressure fuel lines are disconnected.
• A leak exists in the low-pressure fuel system.
• The fuel filter is replaced.
Use the following procedures in order to remove air
from the fuel system:
Type 1 Fuel Filters
Illustration 23
g02791865
Typical example
1.
Loosen the vent screw (1) on the secondary fuel
filter base.
2.
Operate the priming lever of the fuel priming pump
to eliminate any air between the fuel priming pump
and the fuel filters.
24
UENR0617
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